Sheep Ewe Body Condition at Lambing: Nutritional Welfare Management

Ewe body condition score at lambing is one of the strongest predictors of lamb survival and ewe welfare. Proactive nutritional management prevents perinatal problems that cause significant suffering.

Key Facts

Ewes in poor body condition (BCS below 2.5) at lambing have higher rates of twin lamb disease, dystocia, and mastitis
Twin lamb disease (pregnancy toxaemia) causes severe metabolic distress and is often fatal without prompt treatment
Ewes carrying multiple lambs have dramatically higher nutritional demands in late pregnancy
Over-fat ewes (BCS above 4) are predisposed to dystocia and prolapse — both welfare emergencies
Body condition scoring at tupping and mid-pregnancy enables dietary adjustment before deficits become critical
Providing appropriate energy supplementation in late pregnancy prevents most twin lamb disease cases

Welfare Considerations

The welfare of ewes around lambing is determined largely by decisions made 6-8 weeks earlier. Nutritional management in late pregnancy is prevention of welfare emergencies: twin lamb disease causes progressive depression, blindness, and death — a preventable welfare catastrophe when adequate energy is provided. Dystocia, mastitis, and milk fever all cluster in poorly conditioned or over-conditioned ewes. Welfare-positive flock management requires regular body condition scoring, appropriate grouping of ewes by condition and number of lambs carried, and targeted supplementation rather than blanket nutrition. Investment in nutritional monitoring translates directly into reduced perinatal welfare problems and improved ewe and lamb survival.

What You Can Do

Body condition score ewes at tupping and 6 weeks before lambing to guide nutritional management
Group ewes by condition score and number of lambs carried for targeted late-pregnancy supplementation
Provide adequate energy and protein in the final 6 weeks of pregnancy to prevent twin lamb disease
Monitor ewes closely in late pregnancy for early signs of pregnancy toxaemia — prompt treatment is welfare-critical
Ensure ewes have adequate body condition reserves without becoming over-fat — aim for BCS 2.5-3 at lambing